El Jueves, 17 de Abril de 2008, Christopher Schmidt escribió:
> "Geometry in a 2 dimensional plane." In a 2 dimensional plane, all
> geometries are 2d, because you specify their coordinates in two
> dimensions.
Nope.
A point is a 0-dimensional entity, because you cannot move along it.
A line is a 1-dimensional entity, because you can move along it with one
degree of freedom.
A surface (i.e. a closed polygon) is a 2-dimensional entity, because you can
move inside along it with two degrees of freedom.
Now, in a 2-dimensional realm (i.e. a plane), you can have 0-, 1-, and
2-dimensional things. Specified with 2-dimensional coordinates.
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Iván Sánchez Ortega <ivan at sanchezortega.es>
No hacer nada es el camino para no ser nadie
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